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Synthesis and Coordination Chemistry Study of NxO2 Aza-Crown Macrocycle Derivatives in Aqueous Solution
, M.Sc. Thesis Sharif University of Technology ; Ghanbari, Bahram (Supervisor)
Abstract
In this study, a water-soluble Aza-crown N2O2 ligand with a two-carboxylate side arm was synthesized and characterized by 1H-NMR, 13C-NMR, UV-vis, fluorescence, mass spectrometry, and elemental analysis. Unlike EDTA, this ligand is soluble in acidic solution. Fluorescence spectroscopy did not show significant selectivity except for calcium (and to some extent strontium) and copper cations. Due to the similarity of the aminocarboxylate groups with some chelating agents, the ability of this macrocyclic ligand as a scale inhibitor was investigated using the NACE-TM374 standard test method. In these tests, the new arm ligand showed significant protection against the presence of calcium sulfate....